Name: UNS S32615 Plate | High-Silicon Stainless Steel Plate Supplier
Brand: Solitaire Overseas

UNS S32615 Plate

UNS S32615 Plate is a high-silicon austenitic stainless steel flat material that is offered by Solitaire Overseas as a universal material in terms of critical structural and corrosion-resistant services. According to the UNS S32615 Specifications, this grade features a minimum tensile strength of 550 MPa and excellent properties against sulfuric acid of all concentrations.

This grade of plate will be the one used in constructing acid storage tanks, reactor liners, and tank shells. In compliance with ASTM A240 equivalent, and cross-referenced to ASTM A959, UNS S32615 plates provide dimensional stability as well as excellent mechanical performance even when in high service temperatures of up to 990degC.

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UNS S32615 Plate Mechanical Properties

UNS S32615 achieves its mechanical performance through alloying and cold working. The alloy cannot be hardened by heat treatment; solution annealing at 1050–1150°C followed by water quenching is the standard heat treatment to restore optimum corrosion resistance.

Property	Value	Unit
Tensile Strength (UTS)	550 min / 620 typ	MPa
Yield Strength (0.2% Proof)	220 min / 250 typ	MPa
Elongation at Break	25 min / 28 typ	%
Reduction in Area	46	%
Brinell Hardness	170	HB
Elastic (Young's) Modulus	190	GPa
Shear Modulus	75	GPa
Poisson's Ratio	0.28	—
Fatigue Strength	180	MPa
Shear Strength	400	MPa

UNS S32615 Plate Applications and Uses

The high-silicon and copper chemistry of UNS S32615 makes it the preferred alloy across the following industries and services:

Acid storage tank shells and vessel liners in sulfuric acid plants.
Reactor vessel construction for corrosive chemical process duties.
Scrubber and absorber tower panels in acid gas treatment systems.
Splash-zone cladding in concentrated acid handling facilities.
Structural plates for chemical containment trays and bund wall lining.
Evaporator and crystallizer vessel fabrication in chemical processing.
Decarbonization and desulphurisation unit components in power plants.

UNS S32615 Plate Specifications

Parameter	Details
Grade	UNS S32615
Product Form	UNS S32615 Plate
Standard	ASTM A312 / ASME SA-312 / ASTM A213
Applicable Spec	ASTM A999, ASTM A959
Max Temp (Mechanical)	990 °C
Max Temp (Corrosion)	410 °C
PREN	21
Heat Treatment	Solution Annealed 1050–1150°C + Water Quench
Density	7.6 g/cm³
Hardness	170 HB

UNS S32615 Plate Chemical Composition

The table below details the elemental composition of UNS S32615 in accordance with ASTM A959 and UNS designation requirements.

Element	Symbol	Min (%)	Max (%)
Carbon	C	—	0.070
Silicon	Si	4.800	6.000
Manganese	Mn	—	2.000
Phosphorus	P	—	0.045
Sulfur	S	—	0.030
Chromium	Cr	16.500	19.500
Nickel	Ni	19.000	22.000
Copper	Cu	1.500	2.500
Molybdenum	Mo	0.300	1.500
Iron	Fe	Balance	—

Solitaire Overseas supplies the full range of UNS S32615 products. Explore related grades below:

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